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Finding the Fourth Proportional to 285,410.34, 428,139.27 and 95,861.70

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Solution

The fourth proportional to 285,410.34, 428,139.27 and 95,861.70 is: 143,800.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,410.34 : 428,139.27 = 95,861.70 : x
  2. Step 2: Convert to fraction form
    285,410.34/428,139.27 = 95,861.70/x
  3. Step 3: Cross multiply
    285,410.34x = 428,139.27 × 95,861.70
  4. Step 4: Simplify right side
    285,410.34x = 41,042,158,258.96
  5. Step 5: Solve for x
    x = 41,042,158,258.96/285,410.34
  6. Step 6: Final answer
    x = 143,800.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.